Publication: Spiral wave dynamics under feedback control derived from a variety of sensory domains
Issued Date
2004-01-01
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ISSN
1063651X
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2-s2.0-85036233459
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Mahidol University
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SCOPUS
Bibliographic Citation
Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics. Vol.70, No.4 (2004), 6
Suggested Citation
On Uma Kheowan, Supichai Kantrasiri, Prapin Wilairat, Ulrich Storb, Stefan C. Müller Spiral wave dynamics under feedback control derived from a variety of sensory domains. Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics. Vol.70, No.4 (2004), 6. doi:10.1103/PhysRevE.70.046221 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/21437
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Title
Spiral wave dynamics under feedback control derived from a variety of sensory domains
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Abstract
The dynamics of rigidly rotating spiral waves in a reaction layer with light-dependent excitability is studied by numerical integration of a reaction-diffusion equation system with a feedback control. The feedback signal is derived from sensory domains with different geometries by introducing an algorithm that computes the illumination intensity to be proportional to the average wave activity in these domains. It is shown that the shape and size of the trajectories of the spiral wave tip as well as the stability of the spiral rotation depend sensitively on the choice of the geometry of the sensory domain. The numerically observed effects are complemented by constructing a flow map based on an analysis of the feedback signal. © 2004 The American Physical Society.